Increase the number of leads by 3.5 times

Project: dietkurs.ru (Dietology Course in the CIS)
Advertising Services: Course in Nutrition.
Advertising period is 06.05-25.05, 24/7.
The source of advertising is Google AdWords.
Traceable conversions (target actions) - filling in the subscription form for the mail.
The indicators:
Viewed - 2684
Closed - 257
CTR – 9,58 %
The price of the click is 1,07 UAH.
The cost is 275.75 UAH.
Conversions - 17
Conversion ratio: 6.61
Cost of 1 conversion - 16.22

In general, contextual advertising increased the number of leads by 3.5 times